Scientists predict that Earth will inevitably be struck with future extinction events like the one that wiped out the dinosaurs. The potential for such catastrophes is not a matter of if they will happen, but when. There is one event looming ahead of us in time that cannot be minimized or avoided. The core of our sun will one day collapse and expand into a red giant that will destroy all life on Earth. Whether or not humanity becomes extinct as a result depends on whether or not we have colonized other worlds. Any remaining life on Earth will only be salvaged through our efforts, or those of another intelligent species capable of intervening to save Earth's plants and animals. In the process of any such relocation, the possibility of our encroachment on another world where other, alien species already exist is very high--given that a planet is ultimately located that can harbor life. This book explores that future possibility.